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In fontconfig’s 60-generic.conf, order of preference is estabilished for emoji font family. Because fontconfig parses the config files in lexicographic order, appending each <prefer> from <alias> element to the family’s prefer list (to be prepended before the family) [1], our font family defaults stored in 52-nixos-default-fonts.conf will take precedence. That is, of course, unless the default „weak“ binding [2] is used. Emoji family binds strongly [3], so we need to set binding to “same” for our <alias>es to be considered before the ones from 60-generic.conf. By default, we will set the option to all emoji fonts supported by fontconfig, so that emoji works for user if they have at least one emoji font installed. If they have multiple emoji fonts installed, we will use the fontconfig’s order of preference [4]. [1]: https://github.com/bohoomil/fontconfig-ultimate/issues/51#issuecomment-64678322 [2]: https://www.freedesktop.org/software/fontconfig/fontconfig-user.html#AEN25 [3]:cc8442dec8[4]:c41c922018
Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the Hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:
% git remote add channels https://github.com/NixOS/nixpkgs-channels.git
For stability and maximum binary package support, it is recommended to maintain
custom changes on top of one of the channels, e.g. nixos-19.03 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-19.03
For pull requests, please rebase onto nixpkgs master.
NixOS Linux distribution source code is located inside
nixos/ folder.
- NixOS installation instructions
- Documentation (Nix Expression Language chapter)
- Manual (How to write packages for Nix)
- Manual (NixOS)
- Community maintained wiki
- Continuous package builds for unstable/master
- Continuous package builds for 19.03 release
- Tests for unstable/master
- Tests for 19.03 release
Communication:
Note: MIT license does not apply to the packages built by Nixpkgs, merely to the package descriptions (Nix expressions, build scripts, and so on). It also might not apply to patches included in Nixpkgs, which may be derivative works of the packages to which they apply. The aforementioned artifacts are all covered by the licenses of the respective packages.